The Hiveminds motivations for attacking Baal

• Devastation of Baal:

"I will not abandon Baal,’ said Dante. ‘If Baal falls, the whole of the northern Ultima Segmentum will be open to predation from Hive Fleet Leviathan."

• Devastation of baal:

"Tasting their exotic genomes it had seen potential for new and terrible war beasts. And so it drew its plans, and it set in motion its trillion trillion bodies towards the consumption of the creatures in red metal, so that their secrets might be plundered, and reemployed in the sating of the hive mind’s endless hunger."

• Darkness in the blood:

"Dante knew differently. He had seen into the hive mind. He knew it was sentient. He knew what had happened to the Blood Angels was vendetta, and that the invasion had been launched for reasons of ven­geance as much as strategy."

• Devastation of Baal:

"‘From the data we have gathered from the Ordo Astra and which has been provided to us by the
Inquisition and other adepta, we believe this darker course to have been Leviathan’s original trajectory,’
said Dante. ‘See how it looked to be avoiding the Red Scar until this sharp turning to the galactic north,
twelve years ago. The Red Scar is a poisonous area of space. The hive fleets, as a rule, seem to be drawn
to rich worlds, those populous or with intact natural systems. They favour sectors with high densities of
such planets, and avoid perilous areas of space. But in this case the hive fleet appears to be forgoing
richer sectors in favour of a strategic goal. We believe that it is actively seeking the destruction of the
Blood Angels Chapter.’"